International Journal of Engineering Trends and Technology (IJETT) – Volume 16 Number 4 – Oct 2014
Rescue System for Visually Impaired Blind
Persons
Bairoju Vishwa Rupa Chary1, B Santosh Kumar 2
1
pursuing M.Tech (ES) , 2Assistant Professor & HOD (ECE Department)
1,2
Visvesvaraya College of Engineering and Technology (VCET), M.P.Patelguda, Ibrahimpatnam , RangaReddy, Telangana,
INDIA
Abstract:-The purpose of this project is to provide the selfassistance for the visually impaired persons. In case of
blind people fall in a critical position, the sensor network
connected with microcontroller will senses the situation
and passes the information to the caretakers. In this paper
we proposed that GPS and GSM based navigation system
for blind people with a Braille capacitive touch keypad.
The reason behind choosing the Braille keypad is that
blind people can’t see the key digits, for that they need a
touchable interface, with some symbols they will
remember the input instructions on capacitive touch
keypad. The navigation system consists of GPS for
location finding along with wireless sensor nodes such as
temperature sensor, ultrasonic sensor and accelerometer
sensor. These sensors will be useful for monitoring the
surrounding situations. Additionally we have a device
control section which will be operated by using Braille
touch keypad, the device control section of a
microcontroller connected with the load devices as per our
need. The AC devices such as bulbs, fans can be controlled
to the controller through a relay.
appliance’s like fan, blub can be controlledthrough relay and
as well as detect the obstacle when nearby area using
ultrasonic sensor. By using voice module the person used to
get information regarding corresponding values and controlled
using microcontroller.
II. HARDWARE MODULE DESCRIPITION
User section:
MEMS
LCD
TEMPERATURE
SENSOR
GSM
ARM 7
LPC2148
GPS
ULTRASONIC
SENSOR
Keywords—ARM 7 Microcontroller, Sensors, voice
module,Touch keypad,GPSTechnology, and GSM Modem.
I. INTRODUCTION
Now a day nearly 70% of Blind peoples face many problems
like depends on other or else they used instrument called stick
which is identify the path location near by area. In order to
overcome that problem we proposed this project. In recent
days the project has been proposed based GPS and RFID
Technology. We can do in several ways to do this project
depending upon advanced technology. We design a project for
implementation of impaired blind person using modules like
accelerometer, temperature sensor, ultrasonic sensor, voice
module, GSM, GPS and KEYPAD. However, the project is
suitable for blind people without using stick and can walk
freely based on ultrasonic sensor. Therefore we have proposed
a project is useful for impaired Blind persons.The
accelerometer which is placed to human body used to sense
motion of tilting direction depending upon person movement.
The system can be implemented in various application like
wearable navigation robot, blind people assistant ,home
automation and wires device control etc. we control the
ISSN: 2231-5381
KEPYPAD
VOICE
MODULE
Device control section:
RELAY1
GSM
MODULE
FAN
Microcontroller
RELAY2
Fig1: Hardware Module Description
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BLUB
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International Journal of Engineering Trends and Technology (IJETT) – Volume 16 Number 4 – Oct 2014
The Block diagram consists of several components like ARM
7 Microcontroller, voice module, ultrasonic sensor, LCD,
MEMS sensor, temperature sensor, GSM and GPS.
GSM(Global system for mobile): It is a long distance
communication device used to interact similar like our mobile
phones. The modem is used for voice (call), send and receive
depending upon require application. The ARM 7 have two
serial ports i.e. UART0 and UART1.By using these two serial
ports we are easy to communicate with GSM. We can
simultaneously send and receive data to ARM 7
microcontroller and perform the task depending upon
application. This Modem used to get alertness whenever
accident occurs to a respective owner or hospital or police
station.
III. SOFTWARE REQURIMENTS
Kiel µvision4 IDE:
It is used for writing embedded c program depending upon
application. It includes integrated with compiler and
assembler for running program in software. Standard libraries
are used depending upon controller specification.
Flash Magic:
Flash Magic is a programming flash basic controller. It is used
for dumping purpose.
MEMS Sensor: MEMS Technology is the fabricated
Technology consists on a same chip is the combination of
both mechanical and electrical function. The mechanical
devices like moving, sensing a device and heating etc. it is
made up of size in between 1 -100 meter .Generally, MEMS
in the range from 20 mm to a 1 mm in size. MEMS are work
under principle of capacitance technology. It consists of three
axes depends upon to X, Y and z directions.
ARM 7 Microcontroller: It is 32 bit RISIC architecture and
high advanced feature compare to different controller like
8051, AVR and PIC. It has inbuilt feature like 2 I2C, 2 SPI,
ADC, 32 GPIO pins and 2 CAN etc. The power consumption
is very less compare to different controllers like 8051, AVR
and PIC i.e. 3.3v.The time consumption is less and perform
efficient speed and reliability. It has integrated with several
components compare to other controllers. It can
Implementation in two modes. One is 32 bit ARM instruction
set and other is 16 bit THUMB instruction. Depending upon
application used to operate 32 or 16 bit. All ports are used for
both general input output pins like we can interface several
sensor as I/O such as IR Sensor, LM35,LDR,obstacle
detection and so on etc.This port are directly connected to
ARM 7 depending upon application. It has 128/256 kB onchip Flash Program Memory. The SD Card has inbuilt in
feature to store the database. It provided In-System
Programming (ISP) and also In-Application Programming
(IAP) via on-chip boot-loader software.
GPS: It is used to find the exact location and time in climate
condition anywhere on the earth.The GPS module is arranged
at baud rate 9600.It can interface with TTL/CMOS logic.
The detail protocol of NMEA:
1:GPVTG: Track Made Good and Ground
2: GPGGA - Global Positioning System Fix Data
3:GPGSV - GPS Satellites in view
4: GPGSA - GPS DOP and active satellite
5: GPRMC: Recommended minimum specific GPS/Transit
data Speed.
ISSN: 2231-5381
Fig 2: Simulation Result of program dumping hex file code in
ARM 7 LPC2148.
IV WORKING
The system consists of two sections.one is user and other is
device control section.
User Section:
This section contains sensor nodes which includes
temperature sensor, accelerometer sensor and ultrasonic
sensor for monitoring the surrounding conditions of blind
people. This sensor temperature sensor monitors the room
temperature and gives the alert if the room temperature
exceeding the limit. The ultrasonic sensor senses obstacle
when the blind people walking in busy traffic or somewhere
else. The Accelerometer sensor is to sense the tilt angle when
any abnormal health conditions occurred to the blind people.
A voice module is placed in this section for giving audible
alert to the people. The GPS used for the location
identification and GSM is for information passing. The braille
touch keypad is used for the device control signalling. The
following diagram describes the schematic representation of
user section.
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International Journal of Engineering Trends and Technology (IJETT) – Volume 16 Number 4 – Oct 2014
VI .REFERENCES
Fig 3: User Control Section
Device control section:
The device control section consists of relays and load
devices to be controlled by the signal given by the user section.
The system will be operated in two modes; one is Monitoring
mode that is for sensing the conditions by using sensors and
alerting according to that. Another one is device control mode,
in this mode the system waits for input message from user
section through GSM and the message text will be according
to the load device to be controlled and the control will be
given by braille touch keypad. The following diagram
describes schematic representation of Device control section.
1)Takeshi Ando, RyotaTsukahara, Masatoshi Seki, and Masakatsu G.
Fujie, "A Haptic Interface "Force Blinker" for Navigation of the
visually impaired", IEEE Transactions on Industrial Electronics,
VOL. 59, NO. 11, November 2012.
2) PawelStrumillo, "Electronic Interfaces Aiding the Visually
Impaired in Environmental Access, Mobility and Navigation",
Rzeszow, Poland, May 13-15, 2010.
3) S. SaiSanthosh, T.Sasiprabha, R.Jeberson, "BLINAV Embedded
Navigation System for Blind People"
4) A.R. Garcia, R. Fonseca, A. Duran, "Electronic long cane for
locomotion improving on visual impaired people. A case study", Pan
American Health Care Exchangess-PAHCE.Conference, Workshops,
and Exhibits.Cooperation/Linkages.
5)EstebanBayro Kaiser, Michael Lawo,"Wearable Navigation
System for the Visually Impaired and Blind People", IEEE, 2012.
6)S. Kammouna, G. Parseihian, O. Gutierrez, "Navigation and space
perception assistance for the visually impaired-The NAVIG project",
IRBM Vol. 33, 2012.
7)SinMurad, Abdullah Rehman, Arif Ali Shah, "RFAIDE – An RFID
Based Navigation and Object Recognition Assistant for Visually
Impaired People", IEEE, 2011.
8)A. R. García, R. Fonseca. A. Durán, "Electronic long cane for
locomotion improving on visual impaired people. A case study",
IEEE, 2011
9)MohdHelmyAbdWahab, Amirul A. Talib, A. Kadir, AyobJohari,
A. Noraziah, Roslina M. Sidek, Ariffin A Mutalib, "Smart cane:
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Journal of Computer Science Issues, Vol. 8, Issue 4, No 2, July 2011.
VII. AUTHOR DETAILS
BairojuVishwaRupaChary
, Pursuing M.Tech (ES) from
Visvesvaraya College of
Engineering and Technology
(VCET),
M.P.Patelguda,
Ibrahimpatnam,
RangaReddy,
Telangana,
INDIA
Fig 4: Device Control Section
V. CONCLUSION
To provide the self-assistance for the visually impaired
persons the project has been implemented. The advantage of
this project is to provide secure navigation for blind persons
and it is easy way through control the different devices like
fan and blub etc. In future we can maintain database and
update the person information through Html sever.
ISSN: 2231-5381
http://www.ijettjournal.org
B.SanthoshKumar,working
as Assistant Professor &
HOD (ECE Department)
from Visvesvaraya College
of
Engineering
and
Technology
(VCET),
M.P.Patelguda,Ibrahimpatna
m, RangaReddy. He obtained
Ph.D
in
Wireless
Communications .He has
morethan nine years of
Experience in Teaching
Field.
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